Transcript Internet via satellite con Broadsat

LINKSTAR
BANDWIDTH-ON-DEMAND BROADBAND VSAT SYSTEM
LinkStar-At-A-Glance
• DVB-RCS compliant (optional)
• Multimedia, broadband connections
• Hub IP router supports RIP, IGMP, CRTP, UDP, TCP
• Up to 58 Mbit/s download via DVB-MPE forward channel
• Standard DVB-RCS return channel up to 1.67 Mbit/s,
3.33 Mbit/s optional
• Automatic bandwidth allocation
• Programmable, Multi-queue Quality of Service
• Up to 10,000 remotes per hub
• Web-based network management
• Ka-band capable
• Slotted Aloha
• User groups
• Multiple DVB uplink/multiple transponder/multiple
satellite operation
• IPSec transparent with control plane security
• IP header compression
• IP QoS with voice prioritization
• VLAN tagging
• DHCP relay
• HTTP Acceleration
LinkStarRCSplus
Broadband VSAT System
LinkStar® is a two-way, bandwidthon-demand broadband VSAT system
designed around DVB-RCS for service providers, ISPs, and corporate networks that brings more
efficiency and higher data rates to the market than
other TDMA systems. LinkStar combines broadband
access and a high-speed return channel to satisfy
bandwidth-intensive applications using IP data over
any fixed satellite.
Since its introduction, LinkStar VSATs have been
built on a foundation of open standard DVB technology, including a DVB-S forward link and DVBRCS return. LinkStarRCSplus updates LinkStar to
full compliance with the developing DVB-RCS specification, but also offers you a full range of features
and custom applications available only on the LinkStar platform. All LinkStar terminals are interoperable, under the control of a single Network Control
Center (NCC).
LinkStar features a total capacity of nearly 60 Mbit/s
on the forward channel. Return channels to the hub
operate at speeds up to 1.67 Mbit/s, with an optional
upgrade to 3.33 Mbit/s. With this return channel
capacity, remote sites can be server locations, content
providers, multimedia sources, video teleconferencing participants, and corporate headquarters.
LINKSTAR: BANDWIDTH-ON-DEMAND BROADBAND VSAT SYSTEM
Dynamic Bandwidth Allocation, combined with guaranteed
Quality of Service (QoS) and TCP acceleration features, makes
LinkStar more efficient and faster than other TDMA systems. The
combination automatically increases the speed of the return channel to give you the throughput you need. ViaSat is always working
to bring you the highest return channel data rates in the industry,
so even large multimedia files are quickly transmitted.
Bandwidth on Demand
(BOD) allows user to seamlessly
increase bandwidth as it is needed, as long as it’s needed. BOD
is ideal for VOIP applications as well as infrequent large file
transfers.
Committed Information Rate (CIR) mode provides users with
near instantaneous availability of all the bandwidth in their
SLA, ideal for guaranteed Quality of Service (QoS) applications.
CIR Reallocation offers CIR when the user needs it, but if its
not used, it becomes available to the entire network. Allows
operators to fully utilize their bandwidth resources
Slotted Aloha enables low bandwidth applications to have
immediate access to the network. This powerful feature minimizes latency and is particularly suited for transactional applications such as lotteries, point-of-sale (POS), and automated
teller machines (ATMs).
Turbo Coding and Optimized Spectral Shaping on the return
channels enable you to use your satellite bandwidth more efficiently
and further increase return channel throughput.
DVB-based Architecture
enables service providers and satellite
operators worldwide to build open-standard networks for IP data,
Internet access, video streaming, telemedicine, voice over IP, or
distance learning. For operators that require standardization, the
LinkStar network offers a DVB-RCS compliant return channel with
a simple software download.
Web-based Network Management gives you configuration,
control, and management of your VSAT network using a standard
browser. The NCC provides additional management through traffic
statistics, call detail records, and an SNMP interface.
Reduced Operating Costs Remote Terminal software download
feature upgrades networks without site visits, including full or partial conversion of the network to DVB-RCS.
Scalability, with each Regional NCC (RNCC) operating up to
10,000 sites, and a single NCC controlling up to 10 RNCCs for
a total of up to 100,000 network nodes. LinkStar is your way to
reach more of the world with multimedia broadband.
User Groups enable you to logically group remote terminals to
apply common operating parameters to members of the group.
This powerful capability is ideally suited to the network operator
managing multiple customers or classes of access.
IP Header Compression reduces the bandwidth required for a voice
call by eliminating extraneous and redundant protocol information.
Maritime Operation for installation on moving platforms.
Though originally designed for the maritime market, this feature
adapts to any moving platform.
Control Channel Encryption using the LinkStar Control Channel
Security Architecture (LCCSA), provides secure communications
of the LinkStar control channel.
Six-level, two-way Quality of Service (QoS) offers you six
queues at the scheduler level on each remote terminal. You get a
finer prioritization of user traffic based on profiles defined using
the IP QoS feature.
DHCP Relay and VLAN Tagging
enable service providers to offer
VPN services to multiple customers from a single terminal. LinkStar
networks support Multi-protocol Label Switching (MPLS)-based
IP Virtual Private Networks (VPNs). The network is able to provide
end-to-end separation of customer traffic and a dynamic addressing
scheme for the different VPN hosts behind remote terminals.
Optional HTTP Acceleration boosts the speed of your customers’
web surfing experience. Using a pre-fetch proxy, LinkStar significantly reduces the time a user waits for HTML objects to appear
on screen.
Pointing Tool designed specifically to facilitate the installation of
the your remote terminals. Our proprietary tool interacts with the
LinkStar software to provide fast, easy, and accurate pointing of
the antenna.
LinkStar: Bandwidth-On-Demand Broadband VSAT System
LINKSTAR
SATELLITE IP TERMINAL
RETURN CHANNEL
Format: MF-TDMA
RETURN CHANNEL SATELLITE TERMINAL (RCST)
OPTIONAL
Burst Rates
(ksym/s)
156
312
625
1250
2500
Bit Rates
(rate 2/3
FEC, kbits/s)
208
416
833
1667
3333
Channel
Spacing
(kHz)
200
400
800
1600
3200
Transmit IF Frequency: 950 to 1450 MHz
Turbo Coding: DVB-RCS compliant
Modulation: QPSK
OUTBOUND CHANNEL (FROM HUB)
Format:
DVB/MPEG-2 transport stream (ISO/IEC 13818)
DVB-MPE (Multi-protocol Encapsulation) for IP data
PCR insertion
Symbol Rates: 2.5 to 36 Msym/s
FEC: DVB-compliant R/S (204, 188) and convolutional
(R=1/2, 2/3, 3/4, 5/6, 7/8)
BER: Quasi-error free per DVB standard
Modulation: QPSK
Receive IF Frequency: 950 to 1750 MHz
PHYSICAL INTERFACES
L-band Transmit and Receive: (2) Type-F, 75 ohm
Network: (1) 10/100BaseT Ethernet (RJ-45)
RF
Antenna Diameters: 0.96, 1.2, 1.8, 2.4 M
ODU Power:
1- and 2-watt Ku-band, 4- and 5-watt C-band
ODU Operating Temperature: -40°C to 55°C
LNB: Voltage Controlled and 22kHz Tone Controlled
LNB switching
MECHANICAL/ENVIRONMENTAL
Dimensions: 1U high, 13” W, 8” D
Power: 110/220 VAC, auto-sensing, auto-ranging
Temperature:
0° to 40°C operating; -20° to 70°C storage
Humidity:
95% relative humidity non-condensing at 0° to 40°C
operating; 90% relative humidity non-condensing at
65°C storage
NETWORK MANAGEMENT AND CONTROL
Network Management System (NMS):
Java Web-based, standard PC
Network Control Center (NCC):
SUN Solaris Workstation; SNMP agent
SYSTEM
PERFORMANCE
TCP Acceleration: 10 Mbit/s throughput
Scalability:
10,000 nodes with single Hub/NCC; 100,000
nodes with multiple Hubs/NCC
Protocols:
TCP/IP, UDP/IP, IGMP, RIP 1&2, IP QoS support
COMPLIANCE
Safety: UL/cUL 60950; CE (EN60950)
EMI/EMC:
FCC part 15 Class B; VCCI Class B;
AS/NZS3548 Class B; BSMI; CE (EN 301 489-12,
EN 55022, EN 55024, EN 61000-3-2,
EN 61000-3-3
RF Spectrum:
CE (EN 301 428, EN 301 443);
ANATEL
*Specifications subject to change without notice.
www.viasat.com
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The ViaSat logo is a trademark of ViaSat, Incorporated. All other trademarks mentioned are the sole property of their respective companies. Specifications and product availability are subject to change without notice.
©Copyright 2004 ViaSat, Inc. All rights reserved. Printed in the USA.